The latest version of Blender brings significant improvements to the CPU compositor, optimizing its performance and preparing the software for future updates. Although this rewrite is not part of the new Viewport Compositor introduced in Blender 3.5, it does represent a notable acceleration in visual effects processing.
Increased Speed in Key Nodes
Thanks to this optimization, several essential nodes have experienced a significant performance improvement. Among them, the following stand out:
- Blur: now runs between 2 and 10 times faster.
- Filters: offer greater efficiency in applying effects.
- Masks: processed with reduced wait times.
These improvements allow artists to work more fluidly, avoiding unnecessary slowdowns in effects composition.
A More Efficient Glare Node
The Glare node, used to generate lens flares and glow effects in rendered images, has been optimized to offer greater control and ease of use. According to VFX artist Rob Dickinson, who analyzed the changes on his YouTube channel Decoded, this update provides more precise adjustments and better performance.
Compatibility with Industry Standards
In addition to the compositor improvements, Blender 4.4 has updated fundamental libraries to ensure better integration with professional visual effects workflows. Among the most relevant updates are:
- OpenColorIO: optimized color management in composition.
- OpenEXR: better compatibility with high dynamic range files.
- OpenVDB: greater efficiency in volume and effects simulation.
These improvements align Blender with the CY2025 specification of the VFX Reference Platform, ensuring the software continues to be a competitive option in the visual effects industry.
"The improvements in Blender 4.4's compositor mark an important step in optimizing the digital post-production workflow."